Darkstat: Web Based Network Statistics Gatherer

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Darkstat is a simple, lightweight, web based network statistics gatherer. It is a packet sniffer that runs as a background process, collects all sorts of network statistics about network usage, and serves them over HTTP.

Darkstat can run on any modern Unix/Linux like systems that has libpcap such as,

– AIX
– FreeBSD, NetBSD, OpenBSD
– Linux (Archlinux, Debian, Fedora, Gentoo, OpenSUSE, Ubuntu)
– Mac OS X
– Solaris

Features

– Traffic graphs, reports per host, shows ports for each host.
– Embedded web-server with deflate compression.
– Asynchronous reverse DNS resolution using a child process.
– Small. Portable. Single-threaded. Efficient.
– Supports IPv6.

Install Darkstat

Darkstat is available in the default repositories of Debian/Ubuntu systems, so you can install it using the following command:

$ sudo apt-get install darkstat

On Fedora:

It is available in Fedora official repositories, so install it using the command:

$ sudo yum install darkstat

Configure Darkstat

Once you have installed Darkstat, you must edit and set the following changes in /etc/darkstat/init.cfg file.

Edit file /etc/darkstat/init.cfg,

$ sudo nano /etc/darkstat/init.cfg

Make the changes as shown below.

# Turn this to yes when you have configured the options below.
START_DARKSTAT=yes   ## Change no to yes ##

# Don't forget to read the man page.

# You must set this option, else darkstat may not listen to
# the interface you want
INTERFACE="-i eth0"   ## Interface you want darkstat to listen ##
INTERFACE="-i eth1"   ## Interface you want darkstat to listen ##

DIR="/var/lib/darkstat"   ## Uncomment ##
PORT="-p 666"     ## uncomment##
BINDIP="-b 192.168.1.250"   ## Uncomment and set ip address of your eth0 or eth1 ##
LOCAL="-l 192.168.1.0/255.255.255.0"   ## Uncomment and set ip range to listen ##

[...]

Save and close the file.

Now start darkstat daemon using the command:

$ sudo /etc/init.d/darkstat start

Darkstat Usage

Open up your browser and point to http://ip-address:666/. Now you should see the graphs as shown below.

Graphs view:

Graphs (darkstat3 eth1) - Mozilla Firefox_001

Hosts view:

Click on the hosts link on the top to see the list of hosts which are monitored by darkstat.

Hosts (darkstat3 eth1) - Mozilla Firefox_002

If you want to view the traffic of a particular host, click on the IP address of the host. You should then see the traffic caused by the corresponding IP address.

192.168.1.100 (darkstat3 eth1) - Mozilla Firefox_003

Conclusion

Darkstat is yet another simple network analyzer tool like ntop and vnstat that can be used to monitor the input/output traffic caused by the systems in the network. It works well as its advertised and has a constant development cycle. Hope it will useful for you.

Reference Links:

Darkstat